Shell size to 54 mm; shell smooth, conical. Spire elevate. Aperture long and narrow with posterior notch . Parietal region with weak spiral lines. Color cream with broad reddish-brown spiral bands and darker brown spots. The eggs cases are elongate, spoon-shaped but tapering at distal end, with frilly edges. The live animal and mass spawning were photographed by Amy Tripp near Marco Island. The next picture shows spent cases laid inside a pen shell.